Needle exchange programs and drug use.
Gutowski
W D
WD
D015658:HIV Infections / Q000209:etiology* / Q000517:prevention & control*; D015528:HIV Seroprevalence; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D018671:Needle-Exchange Programs / Q000592:standards*; D015819:Substance Abuse, Intravenous / Q000150:complications*